Trypanocidal activity of copaiba oil and kaurenoic acid does not depend on macrophage killing machinery

Biomed Pharmacother. 2018 Jul:103:1294-1301. doi: 10.1016/j.biopha.2018.04.164. Epub 2018 May 7.

Abstract

Activity, mechanisms of action, and toxicity of natural compounds have been investigated in a context in which knowledge on which pathway is activated remains crucial to understand the action mechanism of these bioactive substances when treating an infected host. Herein, we showed an ability of copaiba oil and kaurenoic acid to eliminate Trypanosoma cruzi forms by infected macrophages through other mechanisms in addition to nitric oxide, reactive oxygen species, iron metabolism, and antioxidant defense. Both compounds induced an anti-inflammatory response with an increase in IL-10 and TGF-β as well as a decrease in IL-12 production. Despite being able to modulate the immune response in host cells, the antimicrobial activity of copaiba oil and kaurenoic acid seems to be a direct action of the compounds on the parasites, causing their death.

Keywords: Anti-inflammatory effect; Antimicrobial activity; Chagas disease; Copaiba oil; Kaurenoic acid.

MeSH terms

  • Animals
  • Antiprotozoal Agents / pharmacology*
  • Cell Proliferation / drug effects
  • Diterpenes / pharmacology*
  • Down-Regulation / drug effects
  • Down-Regulation / genetics
  • Fabaceae / chemistry*
  • Ferritins / genetics
  • Ferritins / metabolism
  • HeLa Cells
  • Heme Oxygenase-1 / genetics
  • Heme Oxygenase-1 / metabolism
  • Humans
  • Interleukin-10 / genetics
  • Interleukin-10 / metabolism
  • Interleukin-12 / genetics
  • Interleukin-12 / metabolism
  • Macrophages, Peritoneal / drug effects
  • Macrophages, Peritoneal / enzymology
  • Macrophages, Peritoneal / metabolism*
  • Macrophages, Peritoneal / parasitology
  • Male
  • Mice, Inbred BALB C
  • Models, Biological
  • NF-E2-Related Factor 2 / genetics
  • NF-E2-Related Factor 2 / metabolism
  • Nitric Oxide / metabolism
  • Nitric Oxide Synthase Type II / genetics
  • Nitric Oxide Synthase Type II / metabolism
  • Nitrites / metabolism
  • Oils, Volatile / pharmacology*
  • Reactive Oxygen Species / metabolism
  • Transforming Growth Factor beta / genetics
  • Transforming Growth Factor beta / metabolism
  • Trypanosoma cruzi / drug effects*
  • Tumor Necrosis Factor-alpha / genetics
  • Tumor Necrosis Factor-alpha / metabolism

Substances

  • Antiprotozoal Agents
  • Diterpenes
  • NF-E2-Related Factor 2
  • Nitrites
  • Oils, Volatile
  • Reactive Oxygen Species
  • Transforming Growth Factor beta
  • Tumor Necrosis Factor-alpha
  • Interleukin-10
  • Interleukin-12
  • Nitric Oxide
  • kaurenoic acid
  • Ferritins
  • Nitric Oxide Synthase Type II
  • Heme Oxygenase-1